Smoke wads and machine for making the same



x I BuAIVAZ v SMOKE WADS AND MACHINE FOR MAKING THE SAME March 12,

Filed Nov. 20, 1928 2 Sheets-Sheet l March 12, 1935 B. AIVAZ 1,993,728

S MOKE WADS AND MACHINE FOR MAKING THE SAME 1 Filed Nov. 20, 1928 2Sheets-Sheet 2 Patented Mar. 12, 1935 PATENT OFFICE SMOKE WADS ANDMACHINE FOR MAKING E SAME Boris Aivaz, Budapest, Hungary ApplicationNovember 20, 1928, Serial No. 320,733 In Great Britain November 23, 19275 Claims.

This invention relates to smoke filter plugs or wads for cigarettes,cigarette holders, cigars, to-

bacco pipes and the like and to a machine for the manufacture of wads ofthis kind.

It has already been proposed to provide cigarette paper tubes with smokefilter wads or plugs which are formed of a multiple strip of a pluralityof thicknesses of crepe paper, either with or without absorbent fillingmaterial e. g. cellulose or absorbent paper inserted between andalternating with the crepe paper sheets, said multiple or compoundribbon being wound into a loose spiral.

As the rollers which roll the crepe paper strip into the spiral must notbe rotated with too high a speed,-else the crepe paper would bestretched so as to lose its creping,.-it is necessary to roll the wad orplug from a length of crepe paper ribbon as short as possible, say forexample about 2 inches, so that the plug can be made with a few windingsof the spiral. In order to fill the cross sectional area of thecigarette paper tube with but few windings of the spiral it is necessaryto use a ribbon consisting of a plurality of crepe paper and fillinglayers, say about five layers altogether, so that the ribbon will haveconsiderable thickness. If the spiral were rolled from a single crepepaper ribbon, the spiral would consist of a comparatively great numberof windings and the rolling would take a correspondingly long time sincethe speed of rolling cannot be increased without danger of stretchingthe crepe paper.

However, in forming, the smoke filter wad of a single spiral locatedwithin a cigarette paper,

tube 0, as shown in enlarged cross section in Fig. 1 of the accompanyingdrawings, the center of the spiral a will contain a free channel b whichwill be the wider, the greater the thickness of the ribbon from whichthe spiral is wound. This central channel will oifer the leastresistance to the smoke so that agreat part of the smoke will flowthrough this channel instead of through the narrower air gaps betweenthe windings. This will reduce the absorbing effect of the plug.

According to my invention the multiple crepe paper ribbon forming thewad is doubled at the central part of the wad, so that at least thecentral part of the wad consists of a double-wound spiral.

A further object of the invention is to prevent the paper ribbon fromslipping out of the space enclosed by the rollers through the gapbetween the rollers opposite to the gap, through which the paper ribbonis fed between the set of rollers.

v Another object is to secure the rolling of a regular spiral.

With the above mentioned and other efiects in view, a further object ofmy invention isto provide a machine securing exact supplying, feeding,cutting and forwarding of the strip material towards the apparatus forrolling the material, in a length necessary to form the smoke filter wador plug.-

In supplying the strip material, it is important to prevent anystretching of the corrugated paper strip as taken from the supply roll,an essential 10 prerequisite in order to secure the efficientfunctioning of the smoke filter plug.

According to this invention the supply roll of the machine is providedwith an automatic driving device which consists of a frictional drivingroller positively driven from the shaft driving the feeding device ofthe plug rolling'device and arranged on a pivotal ,arm, provided withmeans to press said driving roller in a yielding manner towards thecircumferential surface of the supply roll.

In the accompanying drawings,

Figure 1 is a cross-section of one form of wad according to myinvention.

Figure 2 is a cross-section of a wad according to this invention on anenlarged scale.

Figure 3 is a diagrammatical side elevation of the machine for themanufacture of the wads.

Figure 4 is a lateral view seen from the right side of Figure 3.

Figure 5 is a side elevation and Figure 6 a vertical cross-sectionalview of a rolling device for rolling a spiral according to Fig. 2.

Figure 7 shows a cross sectional view of another form of the rollingdevice and the guiding means co-operating therewith at the beginning ofthe rolling of the spiral plug.

Figure 8 is a view similar to Figure 7, at the completion of the spiralplug.

Figure 9 is a front view seen from the left side of Figure '7.

Fig. 10 is a schematic showing of the rolls and the drive meanstherefor.

In Figure 2, c is the cigarette paper tube and a is the multiple crepepaper ribbon doubled upon itself at its center part d so that a doublespiral is formed, which fills out uniformly the whole cross sectionalarea of the cigarette paper tube.

The empty spaces seen in the drawings at ,f in reality do not appear, asthe soft spiral is deformed slightly to evenly fill out the spaces 1.

As will be seen from Fig. 2, the whole spiral need not be doubled, itbeing sufiicient to double w only the central part of the spiral.

It is to be understood that instead of crepe paper a regularlycorrugated paper can be used.

The machine for the manufacture of the said wads or plugs comprisesfirst a supply roll 1 (Figure 3) journalled on pin 2 in support 3. Thecorrugated paper ribbon as taken from supply roll 1 is led over roller 4towards the feeding device 5, 5 of the rolling device 1' for rolling thesmoke filter plugs, as hereinafter described. '7 is a usual knife forcutting the length of ribbon to be rolled, driven in known manner fromthe driving shaft of the machine.

8 is a frictional rollerv journalled in arm 9 which is pivoted at 10 insupport 3, and 11 is a spring which presses roller 8 against thecircumferential surface of supply roll 1. Roller 8 is driven by means ofa string or chain gear 12, 13, 14 (Figure 4) from a wheel 15 journalledon the pivot pin 10 of lever 9 while wheel 15 is driven for example bymeans of a string or chain 16 from the same shaft 17 which drives theshaft 18 of the feeding device 5, 5 of the device 1' rolling the smokefilter plugs. z

Hence roller 8 rolls the supply roll positively, and automaticallyassumes the angle to the periphery thereof required to supply exactlythe same length of ribbon a which is cut at 7 from the ribbon a and fedinto the rolling devicer, so that the ribbon a will not suffer anystretching whatever.

According to Figures 5 and 6 the rolling device 1' consists of aplurality of rollers r1, r2, ra'and 1'4 adapted to be turned by asuitable gearing, shown in Fig. 10, in the same direction shown by thearrows. Of course instead of two. lower and two upper rollers a greaternumber of such rollers can be used. The upper pair 1'1, r: of therollers may be journalled in a movable bracket, so that it can be liftedand adjusted with respect to the lower pair of rollers.

According to this invention an abutment 19 is provided opposite to thefeeding gap between rollers 1'1 and n'within the free space enclosed bythe rollers. The foremost edge 20 of the paper strip a will strikeagainst abutment 19 so that when strip a is pushed forward by roller 11and a guide co-operating therewith, shown in the drawings, with dottedlines, the end of strip a will be doubled to form the S-shaped centralpart a: (Figure 2) of the wad.

In the modified form of the rolling device shown in Figures 7 to 9, r1,r2, rs and n are again the rollers adapted to be turned in the samedirection. 21 is a guiding plate, from which the paper ribbon a to berolled is introduced through the gap between the rollers 11 and n. Therollers are provided with at least one, preferably with a plurality ofcircular grooves or slots 22 (according to Figure 9- with two suchslots). According to the drawings guide tongues 23 are projectingthrough grooves 22 which bar the passage of the paper ribbon a throughthe gap 24 between the rollers r2, m which is opposite to the feedinggap between rollers 1'1 and m.

If the paper strip a is introduced between the rollers r1, 1-4 androller r1 drives the paper ribbonso that the central part of the spiralwill be doubled. If that is not desired, the edge 25 is made more orless oblique.

If it is desired that the foremost end of the paper ribbon should befolded upon itself to form a double spiral in the center of the plug, sothat the tongues act as a simple abutment, it is not necessary toprovide the rollers with circular grooves 22 as the stationary partsserving as abutment may enter the space enclosed by the rollers throughgap 24.

Besides tongues 23 other tongues 26 may be arranged to project throughgrooves 22 into the space enclosed by the rollers. Tongues 26 areprovided at their upper end with a curved outer guiding edge 27 to bendthe paper strip a upwards and to lead the same in tangential directiontowards guiding edge 25. The forward edge of guiding tongues 26 areprovided with a substantially semi-circular recess 28 helping to rollthe innermost end of the paper strip a, as shown in Figure 7. Guidingtongues 26 are pivoted at 29 and springs 30 tend to draw said guidingtongues into the position shown in Figure 7.

As the rolling of the spiral of paper ribbon proceeds and the diameterof the spiral increases, the guilding tongues 26 are pressed backward asshown in Figure 3.

When the plug 31 is rolled, a piston 32 (Figure 9) pushes the plug, inknown manner, in its axial direction into a channel or sleeve 33wherefrom it is introduced in any well known manner into the cigarettepaper tube.

I claim as my invention:

1. A machine for the manufacture of wound articles, comprising means forfeeding the stock to be wound, two sets of upper and lower rolls mountedclosely adjacent to each other, means for guiding the stock between thefirst set of rolls, means for turning the said rolls, means extendingbetween the rolls of the second set and having a surface adapted toreceive and deflect stock after it passes through the first set ofrolls, and resilient means also extending between the rolls and adaptedto yieldingly cooperate with the said deflecting means for guiding thestock into its properly wound position.

2. A machine for the manufacture of wound articles, comprising means forsupplying stock to be wound, two sets of upper and lower rolls mountedclosely adjacent each other, means for guiding the stock between therolls of the first set, means for rotating the rolls, and abutment meansextending between the upper and lower rolls of the second set, andadapted to receive and deflect the stock after it is fed between therolls of the first set, and spring-biased means also extending betweenthe said rolls and having a recess therein adapted to yieldingly abutand guide the stock as it is deflected by the said abutment means androlls into its finally turned position.

3. A machine for manufacturing wound articles, comprising supplyingmeans for the stock to be wound, two sets of upper and lower rollsmounted closely adjacent each other, means for guiding the stock betweenthe rolls of the first set, each of the rolls having annular recesses inthe longitudinal surfaces thereof, means for rotating the said rolls,abutment means extending through the recesses of the rolls of the secondset and having a deflecting surface facing the first set of rolls, andadapted to receive and deflect the stock after it passes between therolls of the first set, and a spring-biased member extending through therecesses of the lower rolls of the two sets into the space between therolls and having a recess adapted to receive and guide the stock as thelatter is deflected from the surface of the abutment member and from therolls, whereby the stock is guided into its properly turned position.

4. A machine for the manufacture 'of wound articles, comprising meansfor supplying the stock to be wound, two sets of upper and lower rollsmounted closely adjacent each other, means for guiding the stock intothe said rolls, the said rolls each having annular recesses thereinalong the longitudinal surfaces thereof, means for rotating the saidrolls, abutment means extending between the rolls of the second set andhaving a deflecting surface facing the rolls of the flrst set, andadapted to receive and deflect from its deflecting surface the stockafter the latter passes through the first rolls, and a springbiasedmember extending between the lower rolls into the space between the saidrolls and having a recess therein adapted to receive and guide the stockas the latter is deflected from the said deflecting surface and therolls-into its-properly wound relation, the said member also having-anadditional recess adapted to engage about one of the lower rolls as themember is urged backwardly against the tension of the spring as thewound article increases in diameter.

5. A machine for manufacturing wound articles, comprising means forsupplying the stock to be wound, two sets of upper and lower rolls,means for guiding the stock into the said rolls, means for rotating therolls, abutment means extending between the rolls of that set of rollsremote from the feeding means and against which the stock is adapted toimpinge after it passes through the rolls of the first set whereby it isdeflected and thereafter guided by the said rolls into its properlywound position, and laterally movable means mounted adjacent the openingformed between the two sets of rolls for expelling the wound articleswhen-the latter have been completed.

, BORIS AIVAZ.

